Potentiometers

What is a potentiometer?



A potentiometer is a variable resistor. Potentiometers enable you to regulate and change the current flowing through a circuit. Potentiometers can also be called pots or potmeters.



Potentiometers have two terminals that are fixed to a resistive element (the track). The resistive element is typically wirewound or made from carbon, cermet or conductive plastic. The third terminal is connected to the wiper, which is a sliding contact. As the wiper moves along the track, the resistance changes and the current flowing through the circuit changes.



Types of potentiometer



Rotary potentiometers are easily controlled by turning a spindle or a knob. Rotary potentiometers can be single turn or multiturn.



Slide potentiometers are also known as slider potentiometers or fader potentiometers. To use a slide potentiometer, it’s simply a case of sliding a fader along a straight track to change the resistance.



Trimmer potentiometers, sometimes called trimpots, are used to calibrate and fine-tune circuits and can be mounted straight onto a PCB (printed circuit board). Trimmer potentiometers are easy to adjust with a screwdriver.



String potentiometers (or string pots) take movement and transform it into an electrical signal.



Membrane potentiometers are completely flat. Membrane potentiometers change their resistance when pressure is applied to the membrane.



Do I need a potentiometer with a linear or logarithmic taper?



The taper you need for your potentiometer depends on the intended application.



For potentiometers with a linear taper, the resistance between one end of the track and the wiper varies at a constant rate. If you turn the potentiometer halfway or slide the fader halfway along the track, the resistance will be half of the total resistance. Linear taper potentiometers are typically used in applications such as light dimmer switches.



For logarithmic taper potentiometers, the resistance does not vary at a constant rate. The level of resistance moves exponentially up or down. A potentiometer that has been turned or moved halfway along its track, will not produce resistance that is half the total resistance. Logarithmic potentiometers are commonly used for audio applications.



What is the difference between a potentiometer and a rheostat?



The key difference is the number of terminals that each device has. Potentiometers have three terminals while rheostats only have two terminals.



Looking for peripherals for your potentiometer?



Potentiometer Knobs

Potentiometer Accessories

Potentiometer Mounting Nuts

...
Read more Read less

Filters

Viewing 41 - 60 of 2129 products
Results per page
Description Price Maximum Resistance Potentiometer Type Number of Turns Number of Gangs Mounting Type Power Rating Shaft Diameter Electrical Taper Mounting Hole Diameter Element Material Termination Style Tolerance Series Shaft Length
RS Stock No. 173-0754
BrandRS PRO
MYR37.518
Each (In a Box of 50)
units
1kΩ - 1 - Panel Mount 1W 6.35 mm - - Conductive Plastic Solder ±20% NP23 20mm
RS Stock No. 842-7169
BrandRS PRO
MYR62.03
Each
units
5kΩ Rotary - 1 Panel Mount 2W 8 mm Linear - Conductive Plastic Solder ±20% NP32HS -
RS Stock No. 842-7012
BrandRS PRO
MYR25.55
Each
units
2.5kΩ Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder ±10% P25 25mm
RS Stock No. 842-7116
BrandRS PRO
MYR41.12
Each
units
5kΩ Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder ±20% P25 22mm
RS Stock No. 173-0772
BrandRS PRO
MYR633.244
Each (In a Box of 5)
units
10kΩ Linear - - - - 4 mm Linear - Conductive Plastic Solder Tab ±30% 149618 28mm
RS Stock No. 842-7062
BrandRS PRO
MYR26.81
Each
units
25Ω Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder ±10% P25 25mm
RS Stock No. 173-0741
BrandRS PRO
MYR18.008
Each (In a Box of 50)
units
500Ω - 1 - Panel Mount 3W 6.35 mm - - Wirewound Solder ±10% P40 68mm
RS Stock No. 170-5318
BrandRS PRO
MYR236.428
Each (In a Box of 100)
units
5kΩ Linear 1 4 Panel Mount 1.5W 6.35 mm Linear - - Solder Lug ±10% CLR4000 -
RS Stock No. 173-0769
BrandRS PRO
MYR472.73
Each (In a Box of 50)
units
1kΩ - 1 - Servo Mount 3W 6 mm - - Conductive Plastic Solder ±20% 50CP 21.5mm
RS Stock No. 842-7052
BrandRS PRO
MYR25.55
Each
units
25kΩ Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder ±10% P25 25mm
RS Stock No. 842-7093
BrandRS PRO
MYR91.18
Each
units
500Ω Rotary 1 1 Panel Mount 3W 6.35 mm Linear - Wirewound Solder ±10% P40 68mm
RS Stock No. 842-7040
BrandRS PRO
MYR95.72
Each
units
50kΩ Rotary 1 1 Panel Mount 3W 6.35 mm Linear - Wirewound Solder ±10% P40 25mm
RS Stock No. 812-803
BrandRS PRO
MYR239.08
Each
units
500Ω Rotary 1 - Panel Mount 1.5W 6.35 mm Linear - Wirewound Solder Lug ±10% CLR4000 -
RS Stock No. 842-7201
BrandRS PRO
MYR868.44
Each
units
5kΩ Linear - 1 Spring Return - - Linear - Conductive Plastic - ±20% WT22 -
RS Stock No. 842-7100
BrandRS PRO
MYR95.72
Each
units
5kΩ Rotary 1 1 Panel Mount 3W 6.35 mm Linear - Wirewound Solder ±10% P40 68mm
RS Stock No. 842-7071
BrandRS PRO
MYR26.81
Each
units
50Ω Rotary 1 1 Panel Mount 1W 6 mm Linear - Wirewound Solder ±10% P25 25mm
RS Stock No. 842-7208
BrandRS PRO
MYR903.07
Each
units
10kΩ Linear - 1 Spring Return - - Linear - Conductive Plastic - ±20% WT22 -
RS Stock No. 842-7107
BrandRS PRO
MYR41.12
Each
units
2kΩ Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder ±10% P25 25mm
RS Stock No. 173-0776
BrandRS PRO
MYR682.776
Each (In a Box of 5)
units
5kΩ Linear - - Spring Return - - Linear - Conductive Plastic - ±20% WT22 -
RS Stock No. 842-7046
BrandRS PRO
MYR91.18
Each
units
500Ω Rotary 1 1 Panel Mount 3W 6.35 mm Linear - Wirewound Solder ±10% P40 68mm
Related Products
A comprehensive range of potentiometers from TE Connectivity, ...
Description:
A comprehensive range of potentiometers from TE Connectivity, TW series linear panel mount potentiometers available in 10 Ohm to 25 K Ohms versions with 1-W power handling, and 10% tolerance. These durable potentiometers have a life cycle of 10,000 operations ...
Bourns 3540 Series multiturn precision potentiometers are ideal ...
Description:
Bourns 3540 Series multiturn precision potentiometers are ideal for control applications where accuracy and high reliability are critical. These wirewound potentiometers feature a power rating of 2 W and a resistance range of 100 to 100K. Bushing mountOptional AR lug ...
The 3549 Series 10 turn precision potentiometers are ...
Description:
The 3549 Series 10 turn precision potentiometers are designed for use in harsh environmental conditions, providing reliability and excellent performance over traditional optical and contacting encoders.Applications for the 3549 series precision potentiometers include: medical diagnostic and imaging equipment; ...
• Bushing and servo mount designs available• Linearity ...
Description:
• Bushing and servo mount designs available• Linearity ± 0.25 %, down to 0.05 % on request• Special resistance tolerances to 1 %• Rear shaft extensions and support bearing• Metric shaft available• Dual gang configuration and concentric shafts• High torque, ...